period but pregnant??

so I've been ttc for a little over 6 months now and no luck.. this month I thought I was for sure because I was late 4 days but on the 4th day my period came.. I had a light menstrual period for 2 days the 3rd day was spotting the 4th day was barely anything and the 5tu day was nothing.. I still get some symptoms every here and there but think maybe it's all in my head, but this morning I had a an egg muffin with bacon which I don't like too much but i was able to eat it and when I was brushing my teeth I couldn't stand the smell of either the bacon or toothpaste and I threw up is this a sign???? also the feeling of throwing up hasn't gone away I feel like I didn't finish